Window lock for limiting the opening distance of window sashes



J. JONES Aug. 15, 1933,

WINDOW LOOK FOR LIMITING THE OPENING DISTANCE OF WINDOW SASHES FiledJune 23, 1931 Patented Aug. 15, 1933 Q I r 1,922,29

WINDOW LOOK FOR LIMITING THE OPEN- mo DISTANCE or WINDOW sasnns JasperJones, St. Louis, Mo., assignor of onethird to MarvinJones and one-thirdto Henry Jones, both of St. Louis, Mo. 7 I

Application June 23, 1931. Serial No. 546,307

Claims. (Cl. 292-342) This invention relates to improvements in a windowlock for limiting the opening distance of vertically slidable windowsashes and has for its primaryobject to provide a window lock 1 5 for apair ofslidable sashes to be used in addition to the standard type ofwindowlock for lockingthe sashes in closed position, the addi- 'tionallock being carried by one of the sashes and adaptedto permit the sashesto be opened,

only to a limited distance or degree.

Another object of the invention is in providing a two part lock forslidable window sashes in the form of a socket base secured to one ofmountedin respective slots ,3 of the base, and as each tongue 4 isprovided with a pair, of oppositely disposed projections 9, the lowerprojec tion 9 of each tongue 4 will engage under the material of thebase at the lower. end of re-. 60

spective-slots 3. g I V In preparing this improved window lock for useand, mounting it for cooperation with the slidable sashes of a window,either the right or left hand sash rail 6 may be selected for thesecuring of the base A. Screws 10. are then passed through the openings5 of. the base A and engage in the selected sash rail 6 for securing 40pocket 1 adjacent its lowerend and for profor cooperation with thetongues 4 of which the sashes, and a cooperable. removable wedge stopfor engagement with the other sash, the wedgestop being removable forthe purpose of permitting full sliding movement of the sashes in theirrespective guides of the window frame, when the lock is not in use.

Other and further. objects will appear in the specification and bespecifically pointed out in the appended claims, reference being had tothe accompanying drawing, exemplifying the invention, and in which:--'

i Figure 1 is a fragmentary vertical section taken through theintermediate portion of a window showing the invention secured to theupper sash. I

Figure 2 is an enlarged perspective view of the detached parts of thisimproved two part window lock. 1 I

Figure 3, is anenlarged fragmentary vertical section taken throughthewindow lock and portions of the upper and lower sashes. In theaccompanying drawing A designates the base and B the cooperable wedgemember of this improved two part window lock, the base A being made inone piecelof relatively light material. and being formed with a socketor the base A in vertical position, the base then being ready for thereception and securing of the wedge member B thereto and is adapted tobe permanently carried by the upper sash, and

in this position (that is without the wedge member B being securedthereto) the upper sash 7 and lower sash 11 can be moved with respect toone another in the guideways of the window frame, without interferenceby the base A.

This improved window look as stated in the objects of the invention, isadapted to permit 5* the sashes to be opened only to a limited degreewith respect to one another. The present invention therefore does nottake the place of the usual lock for securing the sashes in closedposition as is shown by the lock 12 in Fig. 1 35* which comprises aturnable fastener 13 carried .by the upper cross rail 14 of the lowerwindow sash 11 and a keeper 15 carried by the lower cross rail 16 of theupper window sash 7.

In mounting the base A of this improved lock to the upper sash '7, it ispreferable to locate the same a limited distance upwardly from the lowercross rail 16 of the upper sash as it is one of the purposes of theinvention to provide a window lock for preventing the sashes beingopened more than a limited degree, and such width of the openingpermitted by the sashes should not of course be SllffiClGl'l'G to permitthe entry of an intruder. It is therefore preferable to mount the baseon the upper sash in a location so as to provide about inches of sashopening.

When the wedge member 13 is mounted to the base A in secured position onthe upper sash, the lower sash 11 is permitted to be held in open vidingaccess to the socket, an opening 2 is. formed thereabove.

The base A is also provided with a pair of flspaced vertical slots 3adjacent its upper end there are a pair formed on the wedge member B.The baseA is also provided with openings 5 adjacent each end for thereception of securing .means such as screws for securing the base to oneof the side rails 6 of an upper window sash 7.

The wedge member B is adapted to be cooperably mounted to the base A,the lower or pointed end 8 of said wedge member adapted to be mounted inthe opening 2 for seating posi- 55 'tion in the socket 1 and the tongues4 each being position as shown in dotted lines in Fig. 1 and in fulllines in Fig. 3 in which the upper cross rail 14 of'the lower sash is inabutment with the tapered face of the wedge member B, the wedge membertherefore limiting and stopping the lower sash from being furtherelevated. In the event however that the lower sash is attempted to beforced upwardly from the open position shown in Figs. 1 and 3, and thefrictional force of the cross rail 14 against the wedge member 13,forces the wedge member B to slide upwardly on the base A, the upperprojection 9 of respective tongues 4 will of a consequence be forcedinto engagement with the material of the base at the upper ends of theslots?) of the base, the tongues 4 and the upper projections 9 thereoftherefore preventing dislodgement of the Wedge member B from the base A.

From the above description it is therefore seen that when thewedgemember B is secured to the base A, the tapered or wedging portionthereof is overextending the path of sliding travel of the lower sashand therefore the wedge member B not only locks the lower sash againstfurther upward sliding movement but also the upper sash against lowersliding movement.

This improved window lock can also be used as an auxiliary lock to theregular lock for fastening the sashes against being opened as in theevent of the regular lock being left unfastened or forced open by anattempt made by an intruder, the limiting window lock comprised of theparts A and B will serve the purpose of preventing the sashes beingopened far enough to prevent entry.

What I claim is:-

1. A Window lock for a pair of slidable sashes comprising a socket basesecured to one of the sashes; and a wedge having its pointedendremovably engaged in the socket of said base and having a portionextending into the sliding path of said other sash, and said wedgehaving a pair of tongues with opposing catching portions on each tonguefor interengaging said base.

2. A window lock for a pair of slidable sashes comprising a socket basehaving a pair of vertical slots secured to one of the sashes; and awedge having its pointed end removably engaged in the socket of saidbase and having a portion extending into the sliding path of said othersash, and said wedge having a pair of tongues and each tongue having apair of opposing projections for interengaging said base for preventingdisplacement of said wedge from said base by abutment of said lastmentioned sash therewith.

3. A Window lock comprising an apertured base having a socket adjacentits lower end; and a wedge having a locking tongue and a pair ofopposing projections on the tongue, said wedge adapted to have itspointed end secured in the socket of said base and the opposingprojections of the tongue engaged in said aperture.

4. A window lock comprising an apertured base having a socket at itslower end; and a wedge having a pair of tongues each having opposingprojections; said wedge adapted to be removably secured to said base byhaving its pointed end engaged in the socket and the projections of thetongues adapted to be interlocked in the apertures of said base.

'5. A window locking wedge comprising a material sheet bent to form anapproximate U- shaped channel member having a pointed end, and a tongueextending from the edge of each side wall of the channel member inalinement therewith each having a pair of oppositely disposedprojections.

' JASPER JONES.

